From 9bd59157e16c64b45da5315f5b49b659fe51984b Mon Sep 17 00:00:00 2001
From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Date: Mon, 13 Apr 2020 14:18:24 +0300
Subject: [PATCH] pinctrl: intel: Introduce new flag to force GPIO base to be 0
Git-commit: 9bd59157e16c64b45da5315f5b49b659fe51984b
Patch-mainline: v5.8-rc1
References: jsc#SLE-12984
In some cases not the first group would like to have GPIO base to be 0.
It's not possible right now due to 0 has special meaning already. Thus,
introduce a new flag to allow drivers to force GPIO base to be 0 on
a certain group. It's assumed that it can be only one group per device
with such flag enabled.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
drivers/pinctrl/intel/pinctrl-intel.c | 3 +++
drivers/pinctrl/intel/pinctrl-intel.h | 2 ++
2 files changed, 5 insertions(+)
diff --git a/drivers/pinctrl/intel/pinctrl-intel.c b/drivers/pinctrl/intel/pinctrl-intel.c
index a1b286dc7008..6a274e20d926 100644
--- a/drivers/pinctrl/intel/pinctrl-intel.c
+++ b/drivers/pinctrl/intel/pinctrl-intel.c
@@ -1281,6 +1281,9 @@ static int intel_pinctrl_add_padgroups(struct intel_pinctrl *pctrl,
case INTEL_GPIO_BASE_MATCH:
gpps[i].gpio_base = gpps[i].base;
break;
+ case INTEL_GPIO_BASE_ZERO:
+ gpps[i].gpio_base = 0;
+ break;
case INTEL_GPIO_BASE_NOMAP:
default:
break;
diff --git a/drivers/pinctrl/intel/pinctrl-intel.h b/drivers/pinctrl/intel/pinctrl-intel.h
index 89f38fae6da7..87fc0555ef90 100644
--- a/drivers/pinctrl/intel/pinctrl-intel.h
+++ b/drivers/pinctrl/intel/pinctrl-intel.h
@@ -70,10 +70,12 @@ struct intel_padgroup {
/**
* enum - Special treatment for GPIO base in pad group
*
+ * @INTEL_GPIO_BASE_ZERO: force GPIO base to be 0
* @INTEL_GPIO_BASE_NOMAP: no GPIO mapping should be created
* @INTEL_GPIO_BASE_MATCH: matches with starting pin number
*/
enum {
+ INTEL_GPIO_BASE_ZERO = -2,
INTEL_GPIO_BASE_NOMAP = -1,
INTEL_GPIO_BASE_MATCH = 0,
};
--
2.16.4